Mycotoxin problems are storage problems long before they become clinical problems. Moisture above thirteen percent in stored maize during humid months is an open invitation to mould growth.
Sample properly: multiple probe points across the lot, composited and mixed, then subsampled. A single grab sample tells you almost nothing about a heterogeneous consignment.
Physical controls come first, including dry, ventilated storage on pallets, first-in-first-out rotation and cleaning between lots. Binders are a supplement to good storage, not a substitute for it.
Watch flock signals such as pale carcasses, reduced intake, poor pigmentation and vaccine failure. These often appear before any laboratory result arrives.